CN104445171B - A kind of powder body homogenization methods and device - Google Patents
A kind of powder body homogenization methods and device Download PDFInfo
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- CN104445171B CN104445171B CN201410744644.1A CN201410744644A CN104445171B CN 104445171 B CN104445171 B CN 104445171B CN 201410744644 A CN201410744644 A CN 201410744644A CN 104445171 B CN104445171 B CN 104445171B
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Abstract
The present invention provides a kind of powder body homogenization methods, comprises the following steps: carried the mixture treating powder body that homogenizing processes and liquid flux to ultrasonic treatment unit and powder classification device by feed bin simultaneously；Ultrasonic treatment unit and powder classification device run simultaneously；Sonicated mixture is recycled to feed bin, powder body up to standard for the particle diameter processed through powder classification device is delivered to membrane separation device together with described liquid flux, powder body not up to standard for the particle diameter processed through powder classification device is recycled to feed bin together with described liquid flux；The slurry processed through membrane separation device is delivered to equipment for separating liquid from solid, the liquid flux that membrance separation goes out is recycled to described ultrasonic treatment unit simultaneously；By the powder conveying that processes through described equipment for separating liquid from solid to warehouse for finished product.The present invention adopts liquid flux to be disperseed by powder body, and supersound process and screening process and carry out simultaneously, and the physical size of powder body meets the requirements and just can be separated in time, the problem solving diameter of particle homogeneity.
Description
Technical field
The present invention relates to chemical technology field, be specifically related to a kind of powder body homogenization methods and realize the equipment of the method.
Background technology
Early 1980s, powder body technology grows up gradually, and increasingly becomes the emphasis of countries in the world research.
Described powder body refers to, physical size, between molecule, atom and bulk material, generally refers to the smile solid particle in the μ m of D97≤10.Powder body may include that the granule of metal, the multiple material such as nonmetal, organic and inorganic and biological, super-refinement along with material, its Electronic Structure and crystal structure there occurs change, create skin effect, small-size effect, quantum effect and macro quanta tunnel effect that bulk material does not possess so that superfine powder have compared with conventional particulate materials a series of have a mind to physics, chemical property.
Superfine powder has many special performances, specifically include that specific surface area is big, fusing point is low, magnetic is strong, activity is good, absorbance is high, thermal conductivity is good, therefore, powder body technology has extremely wide application in industries such as weaving, food, building materials, mining industry, information, chemical industry, medicine, national defence.
At present, the technology of preparing difficult point of ultrafine powder be in that the homogeneity of particle size distribution, powder body dispersibility not good.In Graphene preparation process, have problems with: separate and thoroughly do not form class Graphene；Or, the Graphene higher in order to obtain purity, disengaging time is long causes that Graphene radial separation is excessive.Further, from purity relatively low graphite flake powder body in the process such as mixture obtaining the high graphite flake of purity, Graphene and class Graphene, it is also desirable to a kind of novel powder body homogenizes processing method.
Summary of the invention
Because described in background technology, it is an object of the invention to provide a kind of method and apparatus that can prepare uniform grading powder body, solve the problem that the loss in preparation process that causes due to self light weight of powder body is too high simultaneously.
It is an object of the invention to be achieved through the following technical solutions:
A kind of powder body homogenizing processes device, comprising:
Ultrasonic treatment unit, powder classification device, membrane separation device and equipment for separating liquid from solid；
The entrance of described ultrasonic treatment unit and described powder classification device is all connected with the feed bin being used for holding pending raw material；Described pending raw material includes treating powder body that homogenizing processes and for disperseing the liquid flux of described powder body；
The outlet of described ultrasonic treatment unit connects with described feed bin, for the powder conveying extremely described feed bin that will be ultrasonically treated；
The entrance of described membrane separation device and the outlet of described powder classification device, described membrane separation device is additionally provided with liquid outlet, is recycled to described ultrasonic treatment unit for the liquid flux gone out by membrance separation；
The entrance of described equipment for separating liquid from solid is connected with the outlet of described membrane separation device, and the solid outlet of described equipment for separating liquid from solid is connected to finished bin；
Described ultrasonic treatment unit is for reducing the particle diameter of pending powder body, and homogenize raising；
Described powder classification device is for carrying out classification by pending raw material according to particle diameter, and powder body up to standard leads to described membrane separation device with solvent, and powder body not up to standard is recycled to described feed bin by passage；
Described membrane separation device with described equipment for separating liquid from solid all for described qualified powder body is separated with solvent.
Preferably, described powder classification device includes Multistage filtering device, is described powder body up to standard by the powder body of all described defecators, and not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.
Preferably, described powder body not up to standard is transferred to described feed bin by a plurality of described passage being respectively arranged between every grade of described defecator and described feed bin, or, by being arranged at the single channel transmission extremely described feed bin between described Multistage filtering device and described feed bin.
Preferably, the ultrasonic processing equipment of described ultrasonic treatment unit to be one group have frequency difference.
The present invention also provides for a kind of powder body homogenization methods, comprises the following steps:
Carried to ultrasonic treatment unit and powder classification device by feed bin simultaneously and treat powder body that homogenizing processes and the mixture for disperseing the liquid flux of described powder body to be formed；
Described powder body is carried out supersound process by described ultrasonic treatment unit, and meanwhile, described powder body is carried out particle diameter screening process by described powder classification device；
Powder body through described ultrasonic treatment unit supersound process is recycled to described feed bin together with described liquid flux, powder body up to standard for the particle diameter processed through described powder classification device screening is delivered to membrane separation device together with described liquid flux, powder body not up to standard for the particle diameter processed through described powder classification device screening is recycled to described feed bin together with described liquid flux；
The concentration of the mixture that described powder body and liquid flux are formed is improved by described membrane separation device, forms slurry；
The slurry processed through described membrane separation device is transmitted to equipment for separating liquid from solid, the liquid flux that membrance separation goes out is recycled to described ultrasonic treatment unit simultaneously；
By the powder conveying that processes through described equipment for separating liquid from solid to warehouse for finished product.
Preferably, described powder classification device includes Multistage filtering device, is described powder body up to standard by the powder body of all described defecators, and not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.
Described powder body not up to standard is recycled to described feed bin by a plurality of described passage being respectively arranged at described in any one-level between defecator and described feed bin, or, it is recycled to described feed bin by the single channel being arranged between described Multistage filtering device and described feed bin.
Compared with prior art, the present invention possesses following advantage:
Using liquid flux to be disperseed by powder body, supersound process and classification (screening) process and carry out simultaneously, and the physical size of powder body meets the requirements, namely up to standard, just can be separated in time, thus obtaining the powder body of uniform particle sizes, thus the problem solving diameter of particle homogeneity.
Detailed description of the invention
Embodiment one:
The present embodiment provides a kind of powder body homogenizing to process device, as it is shown in figure 1, comprising:
Feed bin, ultrasonic treatment unit (the 20KHZ 3000W that Ningbo Xian Chang company produces), powder classification device, membrane separation device and equipment for separating liquid from solid.
Described feed bin treats powder body that homogenizing processes and for diluting the liquid flux of described powder body for holding；Described ultrasonic treatment unit, for described pending powder body is carried out supersound process, namely reduces the particle diameter of powder body, improves homogenizing of powder body；Described powder classification device, for described pending powder body is carried out multi-stage screening, filters out the powder body that particle diameter is not up to standard, screens out powder body up to standard；Described membrane separation device and equipment for separating liquid from solid are all for separating qualified powder body and liquid flux, thus preparing qualified solid powder.
The entrance of described ultrasonic treatment unit and described powder classification device is all connected with the feed bin being used for holding pending raw material.
The outlet of described ultrasonic treatment unit connects with described feed bin, for the powder conveying extremely described feed bin that will be ultrasonically treated.
The entrance of described membrane separation device and the outlet of described powder classification device.
The entrance of described equipment for separating liquid from solid is connected with the outlet of described membrane separation device, and the solid outlet of described equipment for separating liquid from solid is connected to finished bin, and its liquid outlet is connected to described ultrasonic treatment unit.
It is additionally provided with loopback channel, for being recycled in described feed bin by underproof powder body between described powder classification device and described feed bin.
Preferably, described powder classification device includes Multistage filtering device, is described powder body up to standard by the powder body of most subordinate defecator, and not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.Preferably, described defecator is the screen cloth with satisfactory order number.
Optionally, described powder body not up to standard is by being respectively arranged at defecator described in any level and a plurality of described passage between described feed bin is transferred to described feed bin, or, by being arranged at the single channel transmission extremely described feed bin between described Multistage filtering device and described feed bin.
Concrete powder handling flow process is: need to be dispersed in liquid flux and form mixture by powder granule to be processed, by described mixture simultaneously by one group of ultrasonic treatment unit with frequency difference and one group of powder classification device, powder granule is under ultrasonic cavitation effect, granularity starts slow decline, simultaneously relatively uniformization；Meanwhile, powder granule is after classifying equipoment, and the powder granule meeting Particle size requirements can be separated, and particle diameter can return feed bin more than the underproof powder granule required, and feed bin is again to ultrasonic treatment unit transferring raw material ... this process is performed continuously over.Owing to powder granule is dispersed in described liquid flux, therefore, in the process of classification, understand some liquid flux to be sent to along with powder granule under sieve together and (namely discharge described powder classification device), for making liquid flux to recycle, one group of membrane separation plant is used to be separated by liquid flux, and deliver to described ultrasonic treatment unit and continue with, additionally, in order to obtain the powder body dried, recycle described equipment for separating liquid from solid from the slurry that membrance separation obtains, be further separated out the powder granule of solid-state.
Embodiment two:
The present embodiment provides a kind of powder body homogenization methods, it is characterised in that comprise the following steps:
Carried to ultrasonic treatment unit and powder classification device by feed bin simultaneously and treat powder body that homogenizing processes and the mixture for disperseing the liquid flux of described powder body to be formed；
Described powder body is carried out supersound process by described ultrasonic treatment unit, and meanwhile, described powder body is carried out particle diameter screening process by described powder classification device；
Powder body through described ultrasonic treatment unit supersound process is recycled to described feed bin together with described liquid flux, powder body up to standard for the particle diameter processed through described powder classification device screening is delivered to membrane separation device together with described liquid flux, powder body not up to standard for the particle diameter processed through described powder classification device screening is recycled to described feed bin together with described liquid flux；
The concentration of the mixture that described powder body and liquid flux are formed is improved by described membrane separation device, forms slurry；
The slurry processed through described membrane separation device is transmitted to equipment for separating liquid from solid, the liquid flux that membrance separation goes out is recycled to described ultrasonic treatment unit simultaneously；
By the powder conveying that processes through described equipment for separating liquid from solid to warehouse for finished product.
Preferably, described powder classification device includes Multistage filtering device, being described powder body up to standard by the powder body of most subordinate defecator, not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is each through ultrasonic treatment unit described in described pipeline communication.Described Multistage filtering device can be arranged to encrypt layer by layer, i.e. the order number pyramid of drainage screen or screen cloth, reaches the purpose sieved step by step.
Described powder body not up to standard is transferred to described ultrasonic treatment unit by a plurality of described passage being respectively arranged at described in any one-level between defecator and described ultrasonic treatment unit, or, by being arranged at the single channel transmission extremely described ultrasonic treatment unit between described Multistage filtering device and described ultrasonic treatment unit.
Corresponding to embodiment one, described powder classification device includes Multistage filtering device, is described powder body up to standard by the powder body of most subordinate defecator, and not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.
Optionally, described powder body not up to standard is recycled to described feed bin by a plurality of described passage being respectively arranged at described in any one-level between defecator and described feed bin, or, it is recycled to described feed bin by the single channel being arranged between described Multistage filtering device and described feed bin.
Claims (7)
1. a powder body homogenizing processes device, it is characterised in that: comprising:
Ultrasonic treatment unit, powder classification device, membrane separation device and equipment for separating liquid from solid；
The entrance of described ultrasonic treatment unit and described powder classification device is all connected with the feed bin being used for holding pending raw material；Described pending raw material includes treating powder body that homogenizing processes and for disperseing the liquid flux of described powder body；
The outlet of described ultrasonic treatment unit connects with described feed bin, for the powder conveying extremely described feed bin that will be ultrasonically treated；
The entrance of described membrane separation device and the outlet of described powder classification device, described membrane separation device is additionally provided with liquid outlet, is recycled to described ultrasonic treatment unit for the liquid flux gone out by membrance separation；
The entrance of described equipment for separating liquid from solid is connected with the outlet of described membrane separation device, and the solid outlet of described equipment for separating liquid from solid is connected to finished bin；
Described ultrasonic treatment unit is for reducing the particle diameter of pending powder body, and homogenize raising；
Described powder classification device is for carrying out classification by pending raw material according to particle diameter, and powder body up to standard leads to described membrane separation device with solvent, and powder body not up to standard is recycled to described feed bin by passage；
Described membrane separation device with described equipment for separating liquid from solid all for described powder body up to standard is separated with solvent.
2. powder body homogenizing according to claim 1 processes device, it is characterized in that: described powder classification device includes Multistage filtering device, it is described powder body up to standard by the powder body of all described defecators, not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.
3. powder body homogenizing according to claim 2 processes device, it is characterized in that: described powder body not up to standard is transferred to described feed bin by a plurality of described passage being respectively arranged between every grade of described defecator and described feed bin, or, by being arranged at the single channel transmission extremely described feed bin between described Multistage filtering device and described feed bin.
4. powder body homogenizing according to claim 1 processes device, it is characterised in that: described ultrasonic treatment unit is one group has the ultrasonic processing equipment of frequency difference.
5. a powder body homogenization methods, it is characterised in that comprise the following steps:
Carried to ultrasonic treatment unit and powder classification device by feed bin simultaneously and treat powder body that homogenizing processes and the mixture for disperseing the liquid flux of described powder body to be formed；
Described powder body is carried out supersound process by described ultrasonic treatment unit, and meanwhile, described powder body is carried out particle diameter screening process by described powder classification device；
Powder body through described ultrasonic treatment unit supersound process is recycled to described feed bin together with described liquid flux, powder body up to standard for the particle diameter processed through described powder classification device screening is delivered to membrane separation device together with described liquid flux, powder body not up to standard for the particle diameter processed through described powder classification device screening is recycled to described feed bin together with described liquid flux；
The concentration of the mixture that described powder body and liquid flux are formed is improved by described membrane separation device, forms slurry；
The slurry processed through described membrane separation device is transmitted to equipment for separating liquid from solid, the liquid flux that membrance separation goes out is recycled to described ultrasonic treatment unit simultaneously；
By the powder conveying that processes through described equipment for separating liquid from solid to warehouse for finished product.
6. powder body homogenization methods according to claim 5, it is characterized in that, described powder classification device includes Multistage filtering device, it is described powder body up to standard by the powder body of all described defecators, not passing through the powder body of defecator described in any one-level is described powder body not up to standard, and it is all recycled to described feed bin.
7. powder body homogenization methods according to claim 6, it is characterized in that, described powder body not up to standard is recycled to described feed bin by the plurality of passages being respectively arranged at described in any one-level between defecator and described feed bin, or, it is recycled to described feed bin by the single channel being arranged between described Multistage filtering device and described feed bin.
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